1、 Purpose
F6 F9 auxiliary switches are suitable for closing, opening, interlocking, signal circuit control of high-voltage switch operating mechanism various high-voltage switch cabinets. They can also be used as conversion combination switches.
4、 Service conditions:
1. Ambient air humidity: - 25 ℃ - + 40 ℃;
2. Altitude: the altitude of the installation site shall exceed 2000m;
3. Weather conditions: the relative humidity of the atmosphere is more than 50% when the temperature is + 40 ℃. The relative humidity can be higher at lower temperature. The monthly average relative humidity of wet month is 90%, the monthly average temperature of that month is - 25 ℃, taking into account the condensation on the product surface due to temperature change.